Spool attachment



Dec. 9, 1941. F. E. BERSCIY-IE SPOOL ATTACHMENT Filed Feb; 11, 1941Fade/0r Bersc/$e Patented Dec. 9, 1941 UNITED STATES PATENT OFFICE.

SPOOL ATTACHMENT Fridolin E. Bersche, Waterloo, 111. ApplicationFebruary 11, 1941, Serial No. 378,472

3 Claims.

The present invention relates to new and useful improvements inattachments for spools of thread and has for its primary object toprovide a device of this character adapted to be detachably secured toone end of the spool and embodying a thread guide adapted to preventrolling of the spool across the floor or other surface should the spoolbe accidentally dropped, as well as to prevent the unwinding of thethread from the spool in excess of the quantity desired for use.

A further object of the invention is to provide a spool attachment ofthis character also embodying cutting means for the thread.

A still further object is to provide a device of this character ofsimple and practical construction, which is neat and attractive inappearance, relatively inexpensive to manufacture and otherwise welladapted for the purposes for which the same is intended.

Other objects and advantages reside in the details of construction asmore fully hereinafter described and claimed, reference being had to theaccompanying drawing forming part hereof, wherein like numerals refer tolike parts throughout, and in which- Figure 1 is a side elevational viewof a spool of thread with the attachment shown in position thereon andwith parts broken away and shown in section, and

Figure 2 is an end elevational view of the spool.

Referring now to the drawing in detail, wherein for the purpose ofillustration I have disclosed a preferred embodiment of the invention,the numeral 5 designates a conventional type of spool of thread havingthe bore 6 extending therethrough and the flanges I at each end.

Inserted in one end of the bore 6 isastem or tubular member 8 having itsinner end split as shown at 9 providing the spring fingers l0 adaptedfor frictionally engaging the walls of the bore 6 to maintain the memberin position therein. The outer end of the tubular member 8 is reduced asshown at H and mounted thereon is a coil spring I2.

Als'o freely mounted on the reduced portion of the tubular member,outwardly of the spring I 2, is a disk l3 of thin rigid material, theend of the reduced portion ll being upset as shown at H to retain thedisk in position, the disk being held against idle rotation by thetension of the spring l2.

The disk is of substantially pear-shaped form as shown in Figure 2 ofthe drawing, and includes the rounded extension l5 at one edge of thedisk within which is formed a slot it having a rounded inner end l1 andwithin which slot the thread I8 is adapted for insertion for positioningthe rounded portion H. The diameter of the rounded portion is sufficientto permit the free sliding movement of the thread therethrough.

Also formed in one edge of the disk I 3 is a V-shaped notch H) whichforms a cutter for the thread when inserted therein.

The tubular member 8 is adapted for removable insertion in the bore 6 ofthe spool and when placed in position, as shown in Figure 1 of thedrawing, the disk l3 will prevent rolling of the spool on a table, flooror other surface, so as to prevent unwinding of the thread therefrom.The tubular member 8 is frictionally held in the bore 6 of the spoolagainst idle rotation and the spring I2 also retains the disk againstidle rotation, although the disk may be rotated on the tubular memberfor the purpose of permitting unwinding of the thread, when so desired.

It is believed the details of construction, advantages and manner of useof the devices will be readily understood from the foregoing withoutfurther detailed explanation.

Having thus described the invention, what I claim is: V

1. A spool attachment of the class described comprising a stem adaptedfor frictional engagement in the bore of the spool, a disk having aradial projection at one edge, said projection having a guide slotadapted to accommodate the thread for feeding the thread therethroughfrom the spool and means for attaching the disk to the stem against idlerotation.

2. A spool attachment of the class described comprising a stem adaptedfor frictional engagement in the bore of the spool, a disk having aradial projection at one edge, said projection having a guide slotadapted to accommodate the thread for feeding the thread therethroughfrom the spool, said disk being freely mounted on one end of said stemand spring means carried by the stem tensionally restraining freerotation of the disk.

3. A spool attachment of the class described comprising a stem havingone end frictionally mounted in the bore of the spool, said stem havinga reduced outer end, a disk freely mounted on the reduced end of thestem, spring means on the reduced end of the stem tensionally engagingthe disk to restrain free rotation thereof. a radial projection on one.edge of the disk and a thread guide in said projection.

FRIDOLIN E. BERSCHE.

